1. The problem is to evaluate an expression by substituting numbers without multiplying them. 2. Normally, substitution means replacing variables with numbers and then performing operations like multiplication. 3. Here, we will substitute the numbers but keep the expression in a factored or expanded form without multiplying. 4. For example, if the expression is $2x \times 3y$, substituting $x=4$ and $y=5$ gives $2 \times 4 \times 3 \times 5$. 5. Without multiplying, we write it as $2 \times 4 \times 3 \times 5$ or $(2 \times 4)(3 \times 5)$. 6. This keeps the substituted numbers visible but does not multiply them. 7. This approach is useful for understanding the structure of expressions or for further algebraic manipulation. 8. If you provide a specific expression, I can show the substitution without multiplication explicitly.